linktjek.dk is a .dk domain served by 2 nameservers (sri.ns.cloudflare.com, wally.ns.cloudflare.com). It was registered on 28 October 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.17.12 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by exchange.cphdomain.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.17.12 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.218.132 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | exchange.cphdomain.com | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:da84 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::6815:110c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.17.12,172.67.218.132 ech=AEX+DQBBiQAgACCkyK+kuCq4tpQirBMC2ICDDATHuX1y3wf9uwrKISAyDQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:da84,2606:4700:3032::6815:110c |
| www | 104.21.17.12 172.67.218.132 2606:4700:3031::ac43:da84 2606:4700:3032::6815:110c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network linktjek.dk: 104.21.17.12 172.67.218.132 2606:4700:3031::ac43:da84 2606:4700:3032::6815:110c (AS13335) www.linktjek.dk: 104.21.17.12 172.67.218.132 2606:4700:3031::ac43:da84 2606:4700:3032::6815:110c (AS13335) |
| Wildcard | No |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.linktjek.dk | JJhu6oibYbFbMHGCkA3GaAVWA6nuK9aHqiJRItLDoUE |
| TXT | _acme-challenge.linktjek.dk | wtndsAG9W2Bk83fB0Ed9Kwp1Ejc3IoJfM2Jp37peHbU |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417759008 |
| Primary NS (MNAME) | sri.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Abion AB |
| Registered | 2002-10-28 |
| Expires | 2026-12-31 (71d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Domain | Registrar |
|---|---|
| appimprove.dk | Abion AB |
| cookiedemo.dk | Abion AB |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 13:35:42 shown | 4705ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-05 21:22:32 | 1510ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 19:54:10 | 9540ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-08 00:07:20 | 694ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-19 06:27:08 | 3207ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-08 12:15:49 | 1052ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 13:18:10 | 1737ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 18:26:36 | 957ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 08:50:43 | 1156ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 19:15:10 | 2133ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 12:09:21 | 851ms | 2 NS 2 A 1 MX | 🔓 Insecure |